ci: add support for CentOS 7

refs: #4610

Change-Id: I458ee0c2bbe54722cf5874c8725b8126629a4d98
diff --git a/.jenkins.d/10-build.sh b/.jenkins.d/10-build.sh
index 875a908..09b09e3 100755
--- a/.jenkins.d/10-build.sh
+++ b/.jenkins.d/10-build.sh
@@ -8,8 +8,8 @@
 
 sudo rm -f /usr/local/bin/ndnsec*
 sudo rm -fr /usr/local/include/ndn-cxx
-sudo rm -f /usr/local/lib/libndn-cxx*
-sudo rm -f /usr/local/lib/pkgconfig/libndn-cxx.pc
+sudo rm -f /usr/local/lib{,64}/libndn-cxx*
+sudo rm -f /usr/local/lib{,64}/pkgconfig/libndn-cxx.pc
 
 if [[ $JOB_NAME == *"code-coverage" ]]; then
     COVERAGE="--with-coverage"